What is the evolutionary advantage of blue eyes?

It’s a byproduct of light skin, which is advantagous in dark climates for vitamin D absorption. It comes with the package.

@Rarebear You’re right!. http://www.pbs.org/wgbh/evolution/library/07/3/text_pop/l_073_04.html

I agree with @Rarebear and I have also read that because of the need to be heavily clothed, often in hooded parkas, skins, in the northern climates that light colored eyes also were more visible as a sexual lure.

A fellow blonde/blue eyer here too. ;-)

This is a summary of what I read on the topic in a book called Why Beautiful People Have More Daughters:

Our pupils get larger when we are attracted to what we are looking at. People like to be able to perceive this change of pupil size when it occurs. Light colored eyes make it easier to see pupil changes than dark colored ones, which makes blue eyes advantageous.

Blue eyed people are more commonly colorblind. That might be an advantage in snow country.
They also have a higher incidence of cataracts.

I dont feel any evolutionary advantage, should eye?

I know my eye color comes from my Mothers Nordic heritage, and I also know that for nearly all of human history, everyone in the world had brown eyes up until about 6000 years ago.
SoI guess statistically there is some evolutionary advantage.

Blue eyes are a recessive trait, therefore it seems it is not especially favoured overall world-wide in the environment.

I agree with @Mariah about the pupils, and also about the need for lighter skin and eyes in northern climates, and people being attracted to blue, especially when it is rare in their community. Personally, I like the more intense colors, the very exotic dark brown eyes, and blue, but not ice blue, I prefer a darker blue.

Being the dominant trait doesn’t necessarily mean it gives you an advantage.

Many traits that are actually disadvantageous are carried on because of a situation where all genes are passed on. They still tend towards extinction (genetically speaking), but it takes longer.

I don’t think there is an evolutionary advantage, just that the first person with blue eyes was very unique and people back then must have found them very beautiful compared to brown eyes so obviously that blue-eyed person reproduced and the blue eye’d trait was kept alive.